[llvm] [SPIR-V] Add SPV_INTEL_bindless_images extension (PR #127737)

[Colin Davidson via llvm-commits]

coldav wrote:

https://github.com/intel/llvm/blob/sycl/sycl/test-e2e/bindless_images/lit.local.cfg - comment says
```
# Support of this feature is waiting for the upstream PR
# https://github.com/llvm/llvm-project/pull/127737 to be merged with intel/llvm.
```

https://github.com/llvm/llvm-project/pull/127737